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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-iteratorclose
description: >
If retrieving an iterator's `return` method generates an error while
closing the iterator with throw completion, this error should be suppressed.
info: |
IteratorClose ( iteratorRecord, completion )
[...]
4. Let innerResult be GetMethod(iterator, "return").
5. If innerResult.[[Type]] is normal,
[...]
6. If completion.[[Type]] is throw, return Completion(completion).
7. If innerResult.[[Type]] is throw, return Completion(innerResult).
GetMethod ( V, P )
[...]
2. Let func be ? GetV(V, P).
3. If func is either undefined or null, return undefined.
4. If IsCallable(func) is false, throw a TypeError exception.
features: [Symbol.iterator]
---*/
var iterable = {};
var iterationCount = 0;
iterable[Symbol.iterator] = function() {
return {
next: function() {
return { done: false, value: null };
},
return: 'str',
};
};
assert.throws(Test262Error, function() {
for (var x of iterable) {
iterationCount += 1;
throw new Test262Error('should not be overriden');
}
});
assert.sameValue(iterationCount, 1, 'The loop body is evaluated');
reportCompare(0, 0);